Android Open Source - libgdx-chat-example Gwt Dispatch Servlet

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Back to project page libgdx-chat-example.

License

The source code is released under:

Apache License

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Java Source Code

package org.stofkat.chat.server.gwt.dispatch;
//from   w w  w .  j a  va  2  s .c om
import javax.servlet.http.HttpServletRequest;

import org.stofkat.chat.common.actions.Action;
import org.stofkat.chat.common.exceptions.DispatchException;
import org.stofkat.chat.common.exceptions.ServiceException;
import org.stofkat.chat.common.results.Result;
import org.stofkat.chat.html.dispatch.GwtDispatchService;
import org.stofkat.chat.server.DefaultActionHandlerRegistry;
import org.stofkat.chat.server.Dispatch;
import org.stofkat.chat.server.InstanceActionHandlerRegistry;
import org.stofkat.chat.server.SimpleDispatch;
import org.stofkat.chat.server.actionhandlers.ChatActionHandler;
import org.stofkat.chat.server.actionhandlers.UpdateActionHandler;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

public class GwtDispatchServlet extends RemoteServiceServlet implements GwtDispatchService {
  private static final long serialVersionUID = 1L;
  
  private Dispatch dispatch;
  
  public GwtDispatchServlet() {
    InstanceActionHandlerRegistry registry = new DefaultActionHandlerRegistry();
    registry.addHandler(new ChatActionHandler());
    registry.addHandler(new UpdateActionHandler());
    dispatch = new SimpleDispatch(registry);
  }
  
  public <R extends Result> R execute( Action<R> action ) throws DispatchException {
        try {            
            if ( dispatch == null ) {
                throw new ServiceException("No dispatch found for servlet '" + getServletName() + "' . Please verify your server-side configuration.");
            }
            HttpServletRequest request = this.getThreadLocalRequest(); 
            return dispatch.execute(action, request.getSession());
        } catch ( RuntimeException e ) {
            log( "Exception while executing " + action.getClass().getName() + ": " + e.getMessage(), e );
            throw new ServiceException(e);
        }
    }
}

Java Source Code List